<template>
    <div>
<!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 为 ECharts 准备一个定义了宽高的 DOM -->
    <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
    </div>
</template>

<script>
import * as echarts from "echarts"; 
import _ from 'lodash'
    export default {
        data() {
            return {
                // 需要合并的数据
               options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
            }
        },
        created(){},
        // 此时，页面上的元素，已经被渲染完毕
      async  mounted() {
            // 3初始化echarts实例
            var myChart = echarts.init(document.getElementById('main'));
        const {data:res} =await this.$http.get('reports/type/1')
        if(res.meta.status !==200){
            return this.$message.error('获取折线图数据失败！')
        }
            //准备数据和配置项
          const result =  _.merge(res.data,this.options)

      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(result);
        },
        methods:{}
    }
</script>

<style lang="scss" scoped>

</style>